The artist Andy Goldsworthy is creating a new work for the Presidio of San Francisco, the national park that was formerly a military base. The artist will hang a felled tree covered in cracked clay from the ceiling of a building within the park that was once used by the Army to store explosives.

According to the Presidio Trust’s website, Tree Fall will be “a fully reversible” work installed in the Powder Magazine building, “a small (25 feet by 30 feet) and currently inaccessible masonry structure”. “The gunpowder room would’ve been a fairly dangerous place to be, so [the work] will have that sense of caution to it,” Goldsworthy says. Due to be completed by the end of August, Tree Fall will be the artist’s third project in the park, following Spire, 2008, and Wood Line, 2011.